oj.uz

Submission #352388

# Submission time Handle Problem Language Result Execution time Memory
352388 2021-01-20T17:28:11 Z ryansee Comparing Plants (IOI20_plants) C++14
14 / 100
 4000 ms 8428 KB 
#include "plants.h"

#include "bits/stdc++.h"
using namespace std;

#define FAST ios_base::sync_with_stdio(false); cin.tie(0);
#define pb push_back
#define eb emplace_back
#define ins insert
#define f first
#define s second
#define cbr cerr<<"hi\n"
#define mmst(x, v) memset((x), v, sizeof ((x)))
#define siz(x) ll(x.size())
#define all(x) (x).begin(), (x).end()
#define lbd(x,y) (lower_bound(all(x),y)-x.begin())
#define ubd(x,y) (upper_bound(all(x),y)-x.begin())
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());    //can be used by calling rng() or shuffle(A, A+n, rng)
inline long long rand(long long x, long long y) { return rng() % (y+1-x) + x; } //inclusivesss
string inline to_string(char c) {string s(1,c);return s;} template<typename T> inline T gcd(T a,T b){ return a==0?llabs(b):gcd(b%a,a); }

using ll=long long; 
using ld=long double;
#define FOR(i,s,e) for(ll i=s;i<=ll(e);++i)
#define DEC(i,s,e) for(ll i=s;i>=ll(e);--i)
using pi=pair<ll,ll>; using spi=pair<ll,pi>; using dpi=pair<pi,pi>; 

long long LLINF = 1e18;
int INF = 1e9+1e6;
#define MAXN (200006)

int n, start;
ll A[MAXN], hmm[MAXN];
bitset<MAXN> gone;
struct u {
	int p[MAXN];
	u() {
		FOR(i,0,MAXN-1) p[i]=i;
	}
	int find(int x) { return p[x] == x ? x : p[x] = find(p[x]); }
	void merge(int x,int y) { p[find(x)]=find(y); }
	bool same(int a,int b) { return find(a)==find(b); }
} u1, u2;

void init(int k, std::vector<int> r) {
	n=r.size(), mmst(hmm, -1);
	
	while(1) {
		start = -1;
		FOR(i,0,n-1) if(!gone[i] && r[i] == 0) {
			DEC(jj,i-1,i-k+1) {
				int j = (jj + n) % n;
				if(!gone[j] && r[j] == 0) goto no;
			}
			start = i;
			break;
			no:;
		}
		if(start == -1) break;
		
		FOR(i,start+1,start+k-1) if(!gone[i%n]) {
			++ A[i%n], hmm[i%n]=start;
		}
		
		DEC(i,start-1,start-k+1) if(!gone[(i+n)%n]) {
			A[(i+n)%n] += hmm[(i+n)%n] != start, -- r[(i+n)%n];
		}
		gone[start] = 1;
	}
	// FOR(i,0,n-1) cerr<<A[i]<<' '; cerr<<'\n';
	FOR(i,0,n-1) if(A[i]==0) { start = i; break; }
	for(ll now=start;;) {
		++ now;
		while(A[now%n]) {
			u1.merge(now%n, (now-1+n)%n);
			++ now;
		}
		if(now%n == start) break;
	}
	
	for(ll now=start;;) {
		-- now;
		while(A[(now+n)%n]) {
			// cerr<<"merge: "<<(now+n)%n<<' '<<(now+1+n)%n<<'\n';
			u2.merge((now+n)%n, (now+1+n)%n);
			-- now;
		}
		if((now+n)%n == start) break;
	}
}

int compare_plants(int x, int y) {
	if(!u1.same(x,y) && !u2.same(x,y)) return 0;
	return A[x] < A[y] ? 1 : -1;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Correct 2 ms 3436 KB Output is correct
4 Incorrect 2 ms 3436 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Correct 2 ms 3436 KB Output is correct
4 Correct 2 ms 3436 KB Output is correct
5 Correct 3 ms 3436 KB Output is correct
6 Correct 24 ms 3564 KB Output is correct
7 Correct 560 ms 8428 KB Output is correct
8 Correct 4 ms 3692 KB Output is correct
9 Correct 22 ms 3564 KB Output is correct
10 Correct 537 ms 8300 KB Output is correct
11 Correct 286 ms 8172 KB Output is correct
12 Correct 305 ms 8428 KB Output is correct
13 Correct 666 ms 8428 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Correct 2 ms 3436 KB Output is correct
4 Correct 2 ms 3436 KB Output is correct
5 Correct 3 ms 3436 KB Output is correct
6 Correct 24 ms 3564 KB Output is correct
7 Correct 560 ms 8428 KB Output is correct
8 Correct 4 ms 3692 KB Output is correct
9 Correct 22 ms 3564 KB Output is correct
10 Correct 537 ms 8300 KB Output is correct
11 Correct 286 ms 8172 KB Output is correct
12 Correct 305 ms 8428 KB Output is correct
13 Correct 666 ms 8428 KB Output is correct
14 Execution timed out 4094 ms 8300 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Incorrect 80 ms 8160 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Incorrect 2 ms 3436 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Correct 2 ms 3436 KB Output is correct
4 Incorrect 2 ms 3436 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3436 KB Output is correct
2 Correct 2 ms 3436 KB Output is correct
3 Correct 2 ms 3436 KB Output is correct
4 Incorrect 2 ms 3436 KB Output isn't correct
5 Halted 0 ms 0 KB -